When Luck Runs Out by Terri Karsten
From Wagonbridge Publishing:
Meg Kelly doesn’t expect any handouts, but she wouldn’t mind a bit of luck. It’s been one bad break after another since Da died in the Civil War. Now homeless and orphaned, Meg has nothing left to lose—except her little brother, Mole. With no one to turn to and no place else to go, Meg makes a desperate choice. Together, she and Mole head west on an orphan train, hoping against all odds to find a home.